If your original is printed on thin paper, images on the back may be visible to the scanner and appear in your scanned image. Try scanning the original with a piece of black paper placed on the back of it. Also make sure the Document Type and Image Type settings are correct for your original.
If you are scanning with the ADF, see "Selecting Basic Settings" on page 49 for details.
If you are scanning from the document table, see "Selecting Basic Settings" on page 79 for details.
Ripple Patterns Appear in Your Scanned ImageA ripple pattern (called moiré) may appear in a scanned image of a printed document. It is caused by interference from the differing pitches in the scanner’s screen and the halftone screen in your original.
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156Troubleshooting